Marble Mountains, Chambless CA: trilobite beds

Where: California · North America · approx. 34.54, -115.53 (vicinity only)

Why this spot: Rockhounding locality: Cambrian Latham Shale beds off Route 66 yielding 500-million-year-old olenellid trilobites, collected for over a century

What turns up: olenellus trilobite heads and partials in greenish shale, brachiopods, archaeocyathids

Access: Open / legal.

BLM rock collecting area inside Mojave Trails National Monument: casual hand collection of rocks and common invertebrate fossils in hobby amounts remains allowed, no vertebrates, no commercial take

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.